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Raystown Lake

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This Envisat radar image is centred on the man-made Raystown Lake in the US state of Pennsylvania. Near the top of the lake – which appears as a snaking red and blue line – there is a bright white radar reflection from the Raystown Dam. The area pictured is part of the greater Valley and Ridge Appalachians, in the Appalachian Mountain range. The lines that cut through the image are the long, even ridges characteristic of this region. One of the significant ridges is Tuscoarora Mountain in the lower-right corner. This is a compilation of three radar images from 23 December 2007, 2 March 2008 and 11 May 2008.